Compressor



Oct. 29, 1929. J. G. DE REMER 1,7335782 COMPRESSOR Filed March 12 1927 8i? 4 1f 4 M zo. Z C Mi 29 y y53 Q a 22g ,4 i 27}\ 2 3 ATTORNE Patented oci; 29, 192el UNITEDfsTA'rr-:s

PATENT oFl-lclaz` JAY G. DE RELIIEIR, OIE''GIRIEENWICH,A CONNECTICUT, ASSGNOB T0 SAvAGE-DE BEMEIB.

CORPORATION, ,0F NEW YORK, N. Y., A. CORPORATION OF NEW YORK I COMPRESSOR y appucatmn'med :man 12,192'2. serial No. 174,899.

The invention relates to compressors, pumps or, the like, of the kindwhich are operated by bodily movement about a central axis, such, for example, as the compressor 6 vshown in Patent No. 1,373,175, and more particularly the invention relates to lubricating vsystemsvfor such'types of apparatus, as hereinafter moreiully explained.

The accompanying drawing shows a pump of the kind referred to, having the improved lubricating system applied to 1t, Fig. lshowing the pump in' elevation' and partly in Y section, Fig.l 2 an enlarged central section of 'the main step'bearing .and oil pump, Fig. 3

a bottom plan of said oil pump, cover` removed,l Fig. 4 a section of thevstep bearing and oil pump for the compressor proper an Fig. 5 a plan of the latterpum Without going into the detail of vconstruction of the compressor/shown, which is well known in the art and fully described in saidpatent, it will suice to say that the compres-v sor proper, designated generally by reference 1, is journalledl in'an lnclined position 1n a rotating frame 2, which is mounted 0n a fixed base 3 to rotate about a vertical axis thereon. This frame includes a vertical shaft 4 which is journalled in the base in a top bearing 5, and a step bearin 6. At its upper end, the frame shaft carriesA va friction wheel- 7, by which it is driven, by 'a pinion on the armature shaft of an electric motor, as indicated. The compressor proper is journalled in the rotating frame in a top bearing 8 and a step or bottom bearing 9, and rotates relatively to the frame in these bearings, ut does not ro-V tate on its own axis, being held against such rotation by the flexible spiral tubes 10 and l0 at the upper end ofthe compressor stem. These tubes hold thecompressor somewhat after the manner of a gimbal joint so as to accommodate its bodily movement about the vertical axis,and they also constitute the intake and outlet connections for the compressor, by which the latteris connected, without glands or stuiiing boxes, to the rest of the system which is usually stationary.

In the operation of this particular compressor the fluid to be pumped, for example, a refrigerant vapor to be compressed, is ad-v mitted throu h' one of the spirals and passes down throng the compressor stem into the body of the compressor wherein it is cau ht betweenpiston-.slugs oi mercury or ot er heavy liquld which formpart of a closed mercury circuit actuated by virtueof the rotary motion. The fluid is compressed by the slugs and then discharged out of the mass of mercurythrough the compressor'stem and the other spiral which representsthe deliv- 00 l ery line, all'according to the principle described in said patent. The mere rotation of the frame causes the mercury pistons to act in the lmanner stated;l also, and con versely, fthe introduction of the fluid in the 65 reversesense, under pressure, ma causethe compressor to act as a motor,'so t at the ap- .paratus may be regarded either as a pump or a' motor sofar as 'the invention is concerned, and accordingly the term compressor- .l

body is tobe'understood in this sense as used herein. f'

t The base or pedestal Buis hollow and forms i A an oil reservoir.' The oil therein passes through an'oil entrance 11 into the chamber 75 of a geartype. oil pump 12, located directl" under the step bearing-6 of the main sha' 4.- This pump is composed of two meshing spur -gears 12, one of which'is provided withy Y a key on 'its upper face matig with a key- 80` slot cut in the reduced lower end of the shaft 4 and both gears are driven by this connection. The pump chamber is constituted by a recess formed in the bottom of the pedestal plate 14 and provided with an attached botftom plate 15. The hub of one' of the gears 12 is )ournalled in this plate andthe other in oft e 'chamber 14 the oil traverses a short channel 16 cut inthe bottom plate and exf tending under the hub ofthe gear which has the key and passes upwardly through that l gear hub and through the bore 4 ofthe shaft 4.* From'v the upper part of this shaft the oil is conducted through a duct 17 to the top 95 bearing 8`of the compressor proper.- The excess of oil which escapes from the bottom of this bearing fallsor is slung by the cen triugal force into the collecting cup 18 formed on the top of the compressor body. 100

The portion which escapes from the top of the bearing 8 reaches the cup 18 through one' or more ducts 19 formed between the bear ing bush and its seat,` as indicated. From .the collectingcup 18,' the oil passes, by the The return of the oil back tothe reservoir in the pedestal 3 is accomplished by a second gear-type pump located under the step bearing 9 and composed of two meshing gears 23, confined in a pump chamber formed in the attached bottom plate'24. One of these gears is provided with a key 25, mating with a keyway cut in the reduced lower end of the body 1, so as to be held nonrotatively thereto and the hubs of both gears are journalled in the bottom plate 24 so that as the frame rotates,

the body 1 being, held by its tube connections as above described, the gears 23 will revolve with respect to the chamber. These gears draw the oil from the oil `chamber 22 through the channel 26 and deliver it to the channel 27, which latter connects with a tube 28, leading inwardly and upwardly to a point above the top of the pedestal 3 where the oil dis-v charges downwardly into a fixed hopper chamber 29, immediately above the top pedestal bearing 5 and so as to flood the latter. The excess falls through` the hole or holes 30 around the bearing back into the oil reservoir. As the frame revolves, both pumps are operated andthe oil is thus continuously circulated through all four bearings, each pump delivering to the other; The

'. pump gears 23 are of larger capacity than the gears 12 which enables them to overcome the centrifugal Vressure'in the oil pipe 28 and safely guar ing 9;

The details of the bearings have not been described because the drawings sufficiently illustrate them and because such details are against an excess in bearnot of consequence to the invention. It will4 be noted,.however, that the top pedestal bearing-5 is provided with an up-standing dam or lipI to receive the oil from the upper end of i the oil pipe 28 and that the down-turned end as to overlap the lip on the bearing proper and thereby insures against splashing of oil out of the hopper chamber 29. Similar precaution against spattering or oil slinging is represented by the oil guide 21 leading to the bearing 9 above referred to, which guide is fast to the compressor body and extends well down into the oil chamber 22, overlapping the upstanding lip on the bearing therein and thereby effectively guarding against escape of oil under high velocity rotation. The collector cup 18, above referred to, is of sufficient depth or height to overlap the lower part of the bearing 8,and thus in like manner prevent oil slinging. This cup is formed of an upward extension of the ribbed cooling jacket which surrounds the compressor body and the oil channel 2O is cut or cast in the inner face of the jacket, thus avoiding exposed oil tubes. The oil tube 28 is concealed in the arm of the .rotating frame.

It will be understood om the foregoing that the principle of the invention is not confined to the particular details of design `just discussed, nor to the particular style of oil vpumps used for feeding the oil back and forth between the body and the frame, but

,may be incorporated in various different forms within the scope of the invention.

The following is claimed:

4 1. In apparatus of the kind described a compressor body journalled on a frame journalled on a base, an oil reservoir in the base and two oil pumps associated with and driven by virt'ure of the relative rotation between frame and base and body andframe respecframe, an oil reservoir, an oilpump delivering oil from the reservoir directly tothe bearing of said body in thel frame, a second oil pump carried by said body and driven by the rotation thereof, delivering. oil to one of the bearings in said base.

3. In apparatus of the kind l'described a compressor body journalled in upper and lower bearings in a revolving frame, an oil pumpdelivering oil to the upper bearing, a collector cup on the compressor body adapted to catch excess oil from said bearing and means for passing such oil from the cup to the lower bearing.

v 4. In apparatus of the kind described, a

compressor body journalled on a revolving frame, an oil pump driven by the frame and delivering oil to the journal of said body and a'second oil pumping means driven by the relative rotation of said body and frame for vreturning the oil tothe first mentioned pump.

5. In apparatus of'the kind described, the combination of a base, a frame revolving thereon, a-body journalled in the frame, an oil reservoir in the base, an oil pump delivering oil from said reservoir through a part of the frame to a bearing of said body in the frame and means associated with'said body for returning oil therefrom to the reservoir.'

6. In apparatus of the kind described, the combination of a compressor body jaurnalled tively, one oil pump delivering to the other vLao in two bearings on a revolving frame, an oil pumpfor delivering oil to one of said bearings, an oil passage 'ormed in or on said body,

for delivering oil from that bearing to the other bearing, and means associated with said body for returning oil from said bearings back to said oil pump. i

7. In apparatus of the kind described, an

oiling system Vcomprising an oil circuit including the surfaces to be lubricated, a

reservoir, a pump for delivering oil to a part of said circuit, a passage conducting oil from said part by centrifugal action, a second pump receiving such oil and a passage conducting such oil from said second pump back to the reservoir.

8. In an apparatus including a frame and a part rotatable relatively thereto, an oiling system for the bearings of said relatively rotatable part, including an oil reservoir, means for delivering oil therefrom to said bearings,

a pump carried by said part and driven thereby, means for delivering the surplus oil from said bearings to the pump and a delivery connection between the pump and Said reservoir.

In testimony whereof, I have signed this specification.

JAY G. DE REMER. 

